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Mobile EEG as a valid alternative to high-resolution laboratory EEG measures
Felipe Rojas-Thomas1, Fiorella Macchiavello1, Vicente Soto1
1Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibáñez, Santiago, Chile.
Neuroimage
|April 25, 2026
Summary
Mobile electroencephalography (EEG) systems reliably capture late event-related potential (ERP) markers for empathy-related neural responses. While portable EEG is viable for stable late neural activity, lab systems offer superior precision and resolution.
Area of Science:
- Neuroscience
- Cognitive Science
- Psychophysiology
Background:
- Mobile electroencephalography (EEG) offers a portable alternative to lab-based systems.
- Reproducibility of event-related potential (ERP) markers with mobile EEG is a key methodological challenge.
Purpose of the Study:
- To assess the reproducibility of empathy-related ERP effects using a mobile EEG system compared to a high-density laboratory system.
- To evaluate the performance of mobile EEG in capturing canonical ERP components and condition effects in an empathy-for-pain paradigm.
Main Methods:
- Comparison of a 32-channel mobile EEG system (Emotiv EPOC FLEX) and a 64-channel high-density system (BioSemi).
- Participants completed two versions of an empathy-for-pain task.
- Analyses included signal quality, ERP amplitudes, topographies, mass univariate tests, source-level analyses, and multivariate decoding.
Main Results:
- Both systems captured canonical ERPs (N1, N2, P3, LPP).
- Enhanced late positive potential (LPP) amplitudes for painful stimuli were consistently observed in both systems.
- Early ERP modulations (N1/N2) and multivariate decoding showed limited reliability and sensitivity with mobile EEG.
Conclusions:
- Mobile EEG reliably captures robust late ERP markers (LPP) in empathy-for-pain paradigms, indicating its viability for socio-emotional processing research.
- Differences in signal quality, spatial resolution, and multivariate sensitivity exist between mobile and lab-based EEG systems.
- High-density lab systems remain superior for analyses demanding high temporal precision, spatial resolution, and sensitivity to distributed neural patterns.
